Adjustable jaw for skis



Feb. 29, 1944. H, Hmm-K 2,342,807

ADJUSTABLE JAW FOR `SKIS Filed Sept. 23, 1940 nyu enior;

@W7-rvu? Patented Feb. 29, 1944 AUMTED s T'ES PATENT oFFlcEVf' Hans Hrack, Immenstadt, Germany; vested inthe Alien Property Custodian Application september 23, 1940, serial No. 357,967 y In Germany July 19, 1939 4 Claims. v (ol. asc-11.35)

Skis are known in which the adjustable jaws are secured in their clamping position by a bow adapted to be lifted up and folded down. Owing to the improvement according to the invention these bows are omitted and shifting of the jaws when removing the boot is prevented.

According to the invention the cover plate is constructed so that it can be lifted and lowered and serves as holding device, a locking being provided for this cover plate. Owing to the invention no additional elements, such as for instance bows, are necessary. Automatic detaching of the cover plate is prevented, so that the movable elements of the jaws are securely held in their position. The cover plate is further secured by the sole of the boot against accidental detaching.

According to the invention one of the racks is fixed, whereas the other rack is movably connected with the cover plate. Consequently, only one of the two racks need be shifted or secured in position. The locking device is arranged on the cover plate and so that this cover plate cannot be automatically detached. Holders for the so-le are further arranged on the jaws so that no holding strap for the toes is necessary. The sole holders can be easily adjusted in accordance with the thickness of the sole, so that the boot is always strongly pressed against the cover plate. The pressing surface of the sole holder is curved so that notwithstanding the strong pressing of the sole on the cover plate the sole of the boot can carry out a rolling movement. The portion on the outer side of the device for securely holding the sole is further constructed as cable guide. For adjusting the .jaws it is therefore no longer necessary to loosen any fixing screws, and no tool is required.

An embodiment of the invention is illustrated by way of example in the accompanying drawing in which, l

Fig. 1 is a vertical longitudinal section through the ski on line I-I of Fig. 2,

Fig. 2 is a top plan view of the ski,

Fig. 3 is a cross section on line 3-3 of Fig. 2,

Fig. 4 is a section through the sole-holding device on line 4 4 of Fig. 1,

Fig. 5 shows the sole-holding device in elevation.

A case-like base plate 3 is xed on the ski I by means of screws 2. The rack 5 at the rear 'end of the base plate is ilxed and the curved toothed edges of the parts of the ski jaws engage with thisrack. 'Ihe rack 6 is movably arranged in the front part of the casing in that a longitudi- The rack 6 is connected by hinges 9 with` the cover plate I0 which in turn engages with itsl downwardly bent edge I I over the base plate 3 and has noses I2.l The edges I6 on the outer sidelof a vertical slot I4 provided in the vertical part I3 of the ski jaw are bevelled. In the slot I4 a sole holder I8 is guided which has a prismatic projection II engaging in the bevelled portion of slot I4, so that it can be shifted in vertical direction but not turned. A screw I9 with conical head 20 serves for securing the sole holder in the adjusted position. The pressure surface of the sole holder is curved in order that the boot can roll. The conical head 20 of the screw I9 has a projecting rim 2|, so that the conical part 2U of the screw can serve as a cable guide.

The operation of the ski jaw is as follows:

The cover plate I0 is raised into the position shown in Fig. 1 and then pulled to the right or forward, the rack 6 participating in the movement, so that the rack disengages from the curved toothed edge of the ski jaw. The boot is then placed between the two jaws and the jaws are brought into the correct position. During this movement the jaws are pressed in rearward direction against the toothed parts 5 by which they are secured in position. The cover plate IU, together with the rack 6, are shifted again so that the rack 6 comes into engagement witn the toothed edges of the plate partl 4, the jaws being thus absolutely secured in their position. The boot is then pulled out without altering the position of the jaws, whereupon the cover plate is oscillated in the direction of the arrow 22 in Fig. 1 and tightly pressed downwards, so that the inward projection I2 of the cover plate I0 comes into engagement. Indentations 23 in the side edge of the cover plate enable unimpeded oscillation of the cover plate along the sole holders I 8.

The ski is now ready for use, the cover plate being additionally secured in its position by the boot placed onto the same. To adjust the sale holders, the conical screw has to be loosened and :nal slot 'I can shift on the sleeve 8 of the screw. 55

jaws each having a foot portion provided at each 'end with a. rack, means holding said feet on the plate for longitudinal and lateral adjustment movements thereon, racks on the feet being engageable with the rst and second racks in adjusted positions of the feet, a cover plate hinged to the front edge of the second rack and having a ilange at its free edge adapted to engage the rear edge of the rst rack and hold the second rack in rearward position whereby to cause engagement of the racks on the feet with the rst and second racks.

2. The ski binding of claim 1, wherein the base plate is of box-like form having upper and lower walls and open at its sides to receive said feet, said feet having slots therein, and screws for securing the base plate to the ski and passing through the upper and lower walls of the base plate and through the slots in the feet.

3. A ski binding including a base plate adapted to be xed on a ski, a rack fixed transversely of the rear end of the plate and facing toward the front end thereof, a second rack at the front end of the plate and confronting the rst rack, means mounting said second rack on the plate for movement toward and from the first rack, a pair of jaws each having a foot portion provided at each end with a rack, means holding said feet on the plate for longitudinal and lateral adjustment movements thereon, the racks on the feet being engageable with the first and second racks in adjusted positions of the feet, a cover plate hinged to the front edge of the second rack and having a flange at its free edge adapted to engage the rear edge of the rst rack and hold the second rack in rearward position whereby to cause engagement of the racks on the feet with the first and second racks, rsaid flange having locking lugs formed thereon and the rear edge of the rst rack having recesses therein for receiving said lugs.

4. The ski binding of claim 3, wherein the base plate is of box-like form having upper and lower walls and open at its sides to receive said feet, said feet having slots therein, and screws for securing the base plate to the ski and passing through the upper and lower walls of the base plate and through the slots in the feet.

HANS HRACK. 

